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config.c

/***************************************************************************/

/*
 *    linux/arch/m68knommu/platform/5249/config.c
 *
 *    Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>

/***************************************************************************/

void coldfire_reset(void);

/***************************************************************************/

static struct mcf_platform_uart m5249_uart_platform[] = {
      {
            .mapbase    = MCF_MBAR + MCFUART_BASE1,
            .irq        = 73,
      },
      {
            .mapbase    = MCF_MBAR + MCFUART_BASE2,
            .irq        = 74,
      }
};

static struct platform_device m5249_uart = {
      .name             = "mcfuart",
      .id               = 0,
      .dev.platform_data      = m5249_uart_platform,
};

static struct platform_device *m5249_devices[] __initdata = {
      &m5249_uart,
};

/***************************************************************************/

static void __init m5249_uart_init_line(int line, int irq)
{
      if (line == 0) {
            writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
            writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
            mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
      } else if (line == 1) {
            writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
            writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
            mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
      }
}

static void __init m5249_uarts_init(void)
{
      const int nrlines = ARRAY_SIZE(m5249_uart_platform);
      int line;

      for (line = 0; (line < nrlines); line++)
            m5249_uart_init_line(line, m5249_uart_platform[line].irq);
}


/***************************************************************************/

void mcf_autovector(unsigned int vec)
{
      volatile unsigned char  *mbar;

      if ((vec >= 25) && (vec <= 31)) {
            mbar = (volatile unsigned char *) MCF_MBAR;
            vec = 0x1 << (vec - 24);
            *(mbar + MCFSIM_AVR) |= vec;
            mcf_setimr(mcf_getimr() & ~vec);
      }
}

/***************************************************************************/

void mcf_settimericr(unsigned int timer, unsigned int level)
{
      volatile unsigned char *icrp;
      unsigned int icr, imr;

      if (timer <= 2) {
            switch (timer) {
            case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
            default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
            }

            icrp = (volatile unsigned char *) (MCF_MBAR + icr);
            *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
            mcf_setimr(mcf_getimr() & ~imr);
      }
}

/***************************************************************************/

void __init config_BSP(char *commandp, int size)
{
      mcf_setimr(MCFSIM_IMR_MASKALL);
      mach_reset = coldfire_reset;
}

/***************************************************************************/

static int __init init_BSP(void)
{
      m5249_uarts_init();
      platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
      return 0;
}

arch_initcall(init_BSP);

/***************************************************************************/

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